Reuters reported in February that ING Group, BNP Paribas and Bahrain-based Arab Banking have submitted bids to buy HSBC's Turkish business unit.

Paris prosecution

Meanwhile in Paris, the French prosecutor's office on Tuesday demanded that HSBC be forced to pay a 1 billion euro ($1.1 billion) bail to cover a potential fine after the bank was put under formal investigation over allegations it helped customers dodge tax, a judicial source told Reuters.

HSBC's appeal against the bail - which magistrates want to be paid before June 20 - was examined by the Paris appeal's court on Monday, the source added.